they were living on Mars. Others said it made them think of 27. the end of the world might look like. What 28. this unusual phenomenon to occur? The answer is simple—wildfires. This year, California has suffered from some of the worst wildfires in the United States’ history. Massive wildfires, such as the Creek Fire and the North Complex Fire, have created huge amounts of smoke. This smoke has not only caused warnings about healthy air quality levels, but also 29. so thick in some places that it has turned day into night, 30. people to turn on their lights in the middle of the day. 26.

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